A nurse is collecting data from a newborn who has respiratory distress syndrome and is experiencing respiratory acidosis. Which of the following risk factors predisposes the newborn to respiratory difficulties?
Small for gestational age.
Maternal history of asthma.
Ventricular septal defect.
Cesarean birth.
The Correct Answer is A
Choice A reason:
Small for gestational age (SGA) newborns are at risk for respiratory distress syndrome (RDS) and respiratory acidosis because they have immature lungs that produce less surfactant, which is needed to keep the alveoli open and prevent atelectasis. SGA newborns also have less glycogen stores, which can lead to hypoglycemia and impaired oxygen delivery to the tissues.
Choice B reason:
Maternal history of asthma is not a risk factor for RDS or respiratory acidosis in the newborn. Asthma is a chronic inflammatory disorder of the airways that affects the mother, not the fetus. Maternal asthma can cause complications such as preterm labor, preeclampsia, or intrauterine growth restriction, but it does not directly affect the fetal lung development or function.
Choice C reason:
Ventricular septal defect (VSD) is a congenital heart defect that causes a hole in the wall between the ventricles of the heart. This can result in increased pulmonary blood flow and pressure, which can lead to pulmonary edema and heart failure in the newborn. However, VSD does not cause RDS or respiratory acidosis, which are related to lung maturity and surfactant production.
Choice D reason:
Cesarean birth is not a risk factor for RDS or respiratory acidosis in the newborn. Cesarean birth can increase the risk of transient tachypnea of the newborn (TTN), which is caused by delayed absorption of fetal lung fluid. TTN usually resolves within 24 to 48 hours and does not cause a significant acid-base imbalance in the newborn.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["B","D","F","H"]
Explanation
Choice A reason
Blood pressure is not a priority finding for a newborn with neonatal abstinence syndrome (NAS). Blood pressure is usually normal or slightly elevated in NAS, and it is not a reliable indicator of the severity of withdrawal symptoms.
Choice B reason
Gastrointestinal disturbances are a common and serious finding for a newborn with NAS. Vomiting and diarrhea can lead to dehydration, electrolyte imbalance, and poor weight gain. Projectile vomiting can also increase the risk of aspiration. This finding requires immediate follow-up and intervention.
Choice C reason
Skin color is not a priority finding for a newborn with NAS. Acrocyanosis (bluish color of the hands and feet) is a normal finding in newborns and does not indicate hypoxia or poor circulation. It usually resolves within the first few days of life.
Choice D reason
NAS score is not a priority finding for a newborn with NAS. NAS score is a tool used to assess the severity of withdrawal symptoms and the need for pharmacological treatment. It is based on a set of clinical signs and symptoms that are scored at regular intervals. However, it is not a substitute for clinical judgment and individualized care. The NAS score alone does not determine the urgency of follow-up.
Choice E reason
Temperature is not a priority finding for a newborn with NAS. Temperature may be slightly elevated or normal in NAS, and it is not a specific sign of infection or withdrawal. Temperature regulation is important for newborns, but it is not an immediate concern in this case.
Choice F reason
Oxygen saturation is a priority finding for a newborn with NAS. Tachypnea (rapid breathing) and retractions (inward movement of the chest wall) are signs of respiratory distress, which can compromise oxygen delivery to the tissues and organs. Hypoxia (low oxygen level) can cause brain damage, organ failure, and death if not corrected promptly. This finding requires immediate follow-up and intervention.
Choice G reason
Central nervous system disturbances are a priority finding for a newborn with NAS. Increased muscle tone, tremors, high-pitched cry, and seizures are signs of neurological dysfunction,which can indicate brain injury, bleeding, or infection. Seizures can also worsen hypoxia and metabolic acidosis. This finding requires immediate follow-up and intervention.
Choice H reason
Respiratory rate is not a priority finding for a newborn with NAS. Respiratory rate may be increased or normal in NAS, and it is not a specific sign of respiratory distress or infection. Respiratory rate should be monitored along with other vital signs.
Correct Answer is C
Explanation
Choice A reason:
Hypertonia is not a characteristic of a preterm infant, but rather of a post-term infant. Hypertonia means increased muscle tone or stiffness, which is more common in infants who are overdue. Preterm infants have poor muscle tone and less subcutaneous fat.
Choice B reason:
Long toenails are also not a characteristic of a preterm infant but of a post-term infant. Long toenails indicate that the infant has grown beyond the expected gestational age. Preterm infants have short and brittle nails.
Choice C reason:
Lanugo is a characteristic of a preterm infant. Lanugo is fine, downy hair that covers the body of the fetus. It usually disappears by the 36th week of gestation, but preterm infants may still have it at birth.
Choice D reason:
Dry skin is not a characteristic of a preterm infant but of a post-term infant. Dry skin indicates that the infant has lost moisture and subcutaneous fat due to prolonged exposure to the amniotic fluid. Preterm infants have thin and transparent skin that may be covered by vernix caseosa, a white, cheesy substance that protects the skin from the amniotic fluid.
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